(written from a Production point of view)
"Desperate Hours"-like story
At least one member of the DIS writing staff thought up a story idea which he subsequently realized was unfortunately too similar to the David Mack tie-in novel Desperate Hours. "I can't name names, but I know there was at least one member of the [DIS writers'] room who was extremely frustrated by it because it means I took the idea he wanted to do for an episode," Mack laughed. 
Several scripts with scenes featuring the tardigrade as a member of the USS Discovery's crew, named Ephraim, were written and either discarded altogether or drastically altered. "There were full-on scenes," recalled Executive Producer Aaron Harberts. "We have the scripts with scenes between Ephraim and Burnham where he's talking to her about the meaning of life, and spores and the beauty of mushrooms." Because the cost of depicting the tardigrade in this way would have been too expensive, the idea was abandoned. (AT: "Choose Your Pain")
Return to Pahvo
Discovery writer Kirsten Beyer, who created the planet Pahvo in DIS: "Si Vis Pacem, Para Bellum", devised a further story idea involving the planet; however, there was not time to develop it further. Beyer instead handed the story to the developers of Star Trek Online, who turned it into a mission in the expansion Age of Discovery, set during the events of the series.